Intrinsic water imbalance in AEMFC complicates the mass transport phenomena in the electrodes and causes performance loss. Because an AEMFC electrode is a complex multi-component system composed of agglomerates of carbon-supported catalyst bound to ionomer, balancing these components is critical for better water management. Herein, we clarify the influence of the three electrode parameters (ionomer

Electrochemical capacitors have achieved prodigious attention among energy storage devices due to their simple and efficient storage mechanism, moderate specific energy and power densities which bridge the gap between Li-ion batteries and conventional capacitors. The active material plays a foremost role in the energy storage mechanism of such storage devices. Here, we have developed a porous Nickel

We report a new method for directly monitoring dynamic surface wetting that occurs during electrochemical droplet cell corrosion measurements on an Al alloy and Cu galvanic couple. The combination of a goniometer and potentiostat enabled the in situ observation of wettability during polarization of each metal and at the interface of the two metals in 0.4 μL NaCl aqueous droplets. Droplet spreading

Electrodeposited Zn-Mn alloy coatings are known to provide excellent corrosion resistance to steel due to their ability to form compact corrosion products when exposed to corrosive media. However, obtaining good quality coatings using conventional direct current (DC) electrodeposition from additive free baths is challenging. Pulsed current (PC) deposition has been reported for various Zn based alloy

Commercial screen-printed carbon electrodes have been treated with a CO2 laser energy of 12.8 mJ cm−2 in air. This thermal treatment resulted in an increase in the crystallinity of the graphite and an enhancement in electron transfer rates, determined by Raman spectroscopy and cyclic voltammetry, respectively. Laser treatment also facilitated the introduction of oxygen groups by anodization at a potential

Manganese hexacyanoferrate (MnHCF) has attracted much attention as promising cathode material for Li and Na ion batteries, owning to its low cost, environmental friendliness, high specific capacity and voltage plateau. Here, the electrochemical performance and electronic structure information of MnHCF were studied in aqueous Zn-ion batteries (ZIBs). Based on the cyclic voltammetry and galvanostatic

The development of high-energy, high-safety, and high-power batteries beyond electric automotive standards is critical for future electric aviation applications. Non-volatile solid-state electrolytes (SSE) offer many promising advantages over traditional flammable liquid electrolytes. SSE may become an enabling technology for certain battery chemistries by preventing detrimental interactions that occur

Synthesis of non-precious metal materials with cost-effective and excellent electrocatalytic activity as counter electrode (CE) of dye-sensitized solar cells (DSSCs) remains a challenge. Herein, MOF-based self-sustaining template and ion exchange method are developed to fabricate Co9S8 and Ni9S8 loaded on N-doped porous carbon nanocage materials (Co9S8/Ni9S8@C-N) with large specific surface area and

Vertically stacked thorn-like nanostructured NiCo2S4 arrays are designed to in-situ grow on the electrochemical oxidized graphite paper by a two-step hydrothermal method where graphite papers act as heterogeneous nuclear sites to rationally construct the unique features of NiCo2S4. Bimetal synergistic effect and the presence of sulfur atoms can improve the ionic and electron conductivity of NiCo2S4

Electrocatalytic activity of Vulcan-supported PtSn (PtSn/C) nanostructured alloys toward electrooxidation of dimethyl ether (DME), a potential small-organic-molecule fuel, has been significantly enhanced in acid medium (0.5 mol dm−3 H2SO4) by decorating PtSn/C with ruthenium black or bimetallic PtRu nanoparticles. The enhancement effect concerns both shifting the onset potential for the DME-oxidation

Sodium-ion batteries have been explored extensively due to its abundant reserve and low cost. However, reports on full symmetric battery with the same electrode materials are relatively less than asymmetrical battery. In this work, symmetric sodium-ion battery based on layered P2-Na0.67[ZnxMn1-x]O2 (x=0.1, 0.2, 0.28, 0.34) as both positive and negative electrode materials are studied comprehensively

As a promising strategy for the catalyst design and optimization, the biomimetic method can greatly improve the activity of oxygen redox catalysts. In this work, we construct a Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF)-ceria (CeO2) hybriding oxygen redox catalyst (BSCCF-NF-H) by imitating the structure and function of fish gills. In our BSCCF-NF-H catalyst, the perovskite nanofibers with the diameter of 200

The generic volcano plot is a widely employed practical tool to display and compare the activity of different electrocatalysts in dependence of a small number of descriptors. It is known that the apex of the volcano curve shifts with applied potential. However, the trend of the potential-dependent shift of the volcano apex has remained unclear. Herein, we address this question for a two-step electrocatalytic

Non-aqueous electrolyte liquids such as carbonate solvents have been widely employed in the commercial lithium-ion batteries and in the development of next-generation rechargeable batteries. The decomposition products of the organic electrolyte and additive molecules contribute to the formation of solid electrolyte interphases (SEIs) on the electrode surface, which have key impacts on battery's electrochemical

BiVO4 is regarded as a promising photoanode material because of its narrow band gap (∼ 2.4 eV). However, the poor bulk carrier transport capacity severely limits the actual performance of BiVO4 in photoelectrochemistry (PEC) water splitting. Here, we tried to synthesize two-dimensional (2D) morphology by adding structure-directing agents to hydrothermal solution and introduce oxygen vacancies by photoassisted

This study reports a one-step process to produce single-stranded deoxyribonucleic acid (ssDNA) functionalized reduced graphene oxide (ssDNA/rGO). The ssDNA acts as a reducing agent for the reduction of GO into rGO and simultaneously performs functionalization onto rGO, which is confirmed by spectroscopic and microscopic analyses. Such reduction capability is not being observed in double-stranded DNA

Ti/TiN/PbO2 electrodes were prepared using an arc-sprayed TiN interlayer on Ti substrates, followed by the anodic electrodeposition of a PbO2 catalytic surface layer on it. In order to investigate the positive effect of the TiN interlayer on the stability and electrocatalytic activity of the anodes, microstructural, surface roughness, adhesion evaluation, accelerated life and electrochemical performance

In this work, a kind of ethylene glycol-based deep eutectic solvent (DES) is explored as electrolyte of an iron-vanadium redox flow battery and the effect of the applied magnetic field is studied, including the physical and electrochemical characteristics of positive and negative DES electrolytes, as well as the performance of DES redox flow battery with/without magnetic field. The experimental results

A flexible nickel foam (NF) based reduced Holey Graphene Oxide (rHGO) wrapping on NiO@NF hybrid supercapacitor electrode is fabricated using facile hydrothermal reaction followed by HGO dispersion dipping to achieve an efficient, bendable and scalable supercapacitor with high capacitance for wearable smart device usage. The sample electrode reveals a typical wrapping morphology of porous rHGO spreading

Te-doped NASICON-type Li1.3Al0.3Ti1.7(PO4)3 (LATP) electrolyte materials were prepared by ball milling-assisted solid state method. The structural, morphological, and transport properties of samples were analyzed through X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscope, energy dispersive X-Ray spectroscopy, electrochemical impedance

Rechargeable aqueous zinc-ion batteries (ZIBs) are attractive candidates for next-generation batteries because of low cost and high safety merits. However, ZIBs still suffer from the problems of dendrites growth during the electrostripping/electroplating process, leading to low cycling stability and hindering the application of ZIBs. Here, a facile and effective strategy of decorating zinc surface

Design and sizing of lithium-ion battery is a challenging task because of inherent multiphysical and multiscale nature of this battery type. Detailed mechanistic models have been developed to resolve the design effects on physico-chemical processes taking place inside the battery and in turn, on battery performance. However, such models are hold back by their mathematically complexity and associated